Cutting apparatus



E. A. ROSIN Dec. 3, 1935.

CUTTING APPARATUS Original Filed Sept. 21, 1931 2 Sheets-Sheet 1Gttorneg Dec. 3, 1935. E os 2,022,739

CUTTING APPARATUS Original Filed Sept. 21, 1951 2 Sheets-Sheet 2Ismaentor EDW/H A. Pea/N.

Gttorneg Patented Dec; 3, 1935 UNITED STATES PATENT OFFIE CUTTINGAPPARATUS Edwin A. Rosin, Toledo, Ohio, assignor to Libbey- Owens-FordGlass Company, Toledo, Ohio, a corporation of Ohio Original applicationSeptember 21, 1931, Serial No. 564,039 Divided and this applicationDecember 3, 1932, Serial No. 645,515

19 Claims. (01. 3332) This application is a division of my copendingapplication entitled Machine for cutting sheets of glass and the like,filed September 21, 1931, Serial No. 564,039.

The present invention relates broadly to apparatus for cutting flatsheets or plates of any desired material but is especially designed foruse in the cutting of glass sheets when incorporated in the type ofmachine illustrated and described in my above-noted copendingapplication. The primary object of this invention resides in theprovision of cutting mechanism of novel and simplified constructionwhich will lend itself to the cutting or scoring of the glass sheets ina positive, accurate and efficient manner.

Another important object of the invention is the provision of animproved form of cutting mechanism wherein the cutting tool is capableof a plurality of individual and independent adjustments which providefor any desired accurate setting thereof.

A further object of the invention is the provision of cutting mechanismof this character which will automatically adjust itself to glass sheetsof different thicknesses without previous manual manipulation and alsoembodying means for 'yieldably maintaining the cutting tool inengagement with the glass sheet to automatically compensate for anyinequalities in the surface thereof.

Other objects and advantages of the invention will become more apparentduring the course of the following description when taken in connectionwith the accompanying drawings.

In the drawings forming a part of this application and wherein likenumerals are employed to designate like parts throughout the same,

Fig. 1 is a vertical longitudinal section through the cutting mechanismand associated parts of the apparatus,

Fig. 2 is a section taken substantially on line 2-2 of Fig. 1,

Fig. 3 is a section taken substantially on line 3-3 of Fig. 2,

Fi 4 is a section taken substantially on line 4-4 of Fig. 1,

Fig. 5 is a section taken substantially on line 5-5 of Fig. 1,

Fig. 6 is a perspective View, partially in section, of one of the cutterholder assemblies,

paratus illustrated therein includes generally a horizontalreciprocating cutting table A adapted to support the sheets or plates ofglass Ill to be cut, and which is adapted to be movable back and forthin any desired manner beneath the 5 cutting mechanism B which is mountedin a relatively fixed position above said table. That is to say, thecutting mechanism B remains stationary While the cutting table A isreciprocated therebeneath.

The particular construction of the cutting table A, together with themeans for reciprocating the same, is fully illustrated and described inmy above-identified copending application and will therefore be neitherillustrated nor described in detail herein. Briefly stated, however, thecutting table A is divided longitudinally into two principal portions orsections II and I2 respectively, the former constituting the cuttingsection upon whch the glass sheets I 0 are supported during cutting, andthe latter serving as a receiving section for receiving the glass fromthe cutting section after the cutting thereof as will be more fullyhereinafter apparent.

The numeral l3 designates a cutter carrying cross member or beamextending transversely above the table A, the opposite ends of which maybe supported by vertical stationary standards (not shown). Carried bysaid cross member are a series of cutting units arranged side by sidetransversely of the table, one unit only being herein illustrated anddesignated in its entirety by the numeral M. The cutters are preferably,although not necessarily, spaced about one inch apart.

Each cutting unit [4 includes apair of relatively thin electro-magnetsl5 positioned one above the other and each consisting of a metal core I6about which is wound the usual coil ll. The cores 16 for each pair ofmagnets form the 40 customary horse-shoe magnet by being integral withtheir connecting member I8 which is secured to a bracket I9, saidbracket being provided with a base portion 20 which is adapted to restupon the inclined portion 2| of cross beam I3. This inclined portion hasan opening 22 therein, and projecting upwardly through this opening is abolt 23 threaded within the base portion 20 of bracket IS; a washer 24bearing against the underside of inclined portion 2|. By this means, theelectro-magnets are rigidly secured to the cross beam, the forward endsof said magnets being supported upon plates 25. In order to effectproper positioning of the electro-magnets and also to prevent slippingthereof, the bracket I9 lower face thereof.

may be provided with a laterally offset ear 26 through which passes anadjusting screw 21 engaging the rear edge of inclined portion 2| ofcross beam 13. By loosening the bolt 24 and adjusting screw 21, theproper positioning of the electro-magnets can be effected.

Each of the cutting units I4 also includes a substantially L-shapedlever 28 comprising a substantially horizontal tool supporting arm 29and a substantially vertical arm 35, said lever being pivotally mountedintermediate its ends upon a horizontal pin 3 I. As best shown in Figs.and '7, the L-shaped lever 28 of each cutting unit is carried upon anindividual pin 3 i, said pin projecting beyond the lever at oppositesides thereof. The cross beam I3 is provided with a plurality of spaceddepending ears 32, one of said ears being positioned between each pairof adjacent levers and constituting one-half of a bearing'for therespective pin 5 I. A plate 33 constitutes the other half of thebearing, being secured to the respective ear by a screw or otherfastening element 34. This construction is provided in order that anyone of the levers 28 may be removed from the machine without disturbingthe position or operation of the remaining levers. For instance, when itis desired to remove any one lever, it is simply necessary to remove theplates 33 at opposite sides of the said lever, whereupon the lever canbe removed, after which the plates may again be secured in place.

The horizontal tool supporting arm 29 of lever 28 is provided with anoffset foot 35 formed with an open slot 36 and having grooves 31 uponthe Carried by the offset foot is a shoe 38 comprising an arcuatelyshaped bottom plate or supporting portion 39 and a substantiallyvertically disposed flange 45 at one side edge thereof. The upper end ofthe shoe is formed with a head 4| having formed upon the fiat uppersurface thereof ribs 42 which fit within the grooves 31in the offsetfoot 35. The body portion of the shoe also has a threaded opening 43adapted to receive therein the securing element 44. This securingelement is in the form. of an ordinary bolt, and carried thereby andreceived within the slot 35infoot 35 isan eccentric 45 formed with awrench-engaging head 45 so that. it can be readily turned. With such aconstruction, it

willbe apparent that upon loosening the bolt 44.

and rotating the eccentric45, the shoe 38 can be adjusted transverselywith respect to the foot 35,

the ribs 42 fitting within slots 3'! serving. to pre-.

vent any rotation of the said shoe.

Adapted to be supported upon the arcuately shaped bottom plate 39of shoe38 is a member 4? pivotally secured to the. said shoe by means of a boltfipassing loosely through an opening 49 in flange 45 and threaded withinan opening 55 in'member 41. The bottom of the member 4T is bevelled asat 5|, and extending vertically through the. said member isasubstantially square opening 52. The member 47 is also formed withacut-out'portion or recess 53 communicating with theeopening 52. Adaptedtobe received within the opening 52 is a cutter holder 54, the bottomThe cutter holder is provided in cutter holder 54 is the cutting ferrule59 carrying at its lower end a cutting diamond 60 and its upper endbeing formed with a knurled head 6|, if desired, to facilitate turningof the ferrule within the opening 51 to adjust the position of 5 thediamond. The cutting ferrule is secured within the holder 54 by means ofa set screw 62 passing through the opening 58 in stem 56, while theholder 54 is secured within the opening 52 by a set screw 63 threadedthrough opening 64 in member 41.

The cutter holder 54 is supported within the member 41 by means of a nut65 threaded upon the upper cylindrical end 66 of holder 54, said nutresting upon the top of member 41. Upon loosening of the set screw 62,the cutting ferrule 59 can be rotated within opening 5'! to facilitateproper positioning of the cutting diamond. Likewise, upon loosening ofset screw 63 and rotation of. nut 65, the cutter holderp54 can be movedupwardly or downwardly within opening 52 to adjust the vertical positionof the cutter. When the above parts are in properly assembled position,the cutting tool is adapted to project downwardly through the slot 61 inthe bottom plate 35 of shoe 38. V

The upper end of the vertical arm of each .lever 28 is bifurcated toprovide spaced ears 68 upper end as at 14, with the bracket 15 fixedlycarried by the cores N3 of the electro-magnets. Threaded upon the outerend of the split bolt H is a nut 16, and encircling the bolt and bearingat one end against the sleeve 69 and at its opposite end against the nut16 is a compression spring 1'! normally tending to urge the sleeve 69and consequentlythe upper end of the lever arm. 30 inwardly. The pinIllof course passes loosely through the slot in the bolt 1 l.

Loosely received through the portion 18 of bracket, 15 is a screw 19having secured to its inner end av tension spring 80, the opposite endof said spring being connected to the bar 13- andacting to normally drawthe said bar away from and. out of engagement with the cores of theelecti e-magnets as indicated by the broken lines in Fig. 1. A nut 8| isthreaded upon the outer-end of screw 19 to adjust the tension of" spring85. Also carried by the portion 18 of bracket l5.is a stop screw 82which serves to limit the outward movement of the bar 13 about its pivot14.

In practice, when the electro-magnets I4 are energized, the bar 13 willbe drawn inwardly, thereby against the action of spring 80, andof'course the inward movement of'bar 13 will cause the lever 28 to berocked in a counter-clockwise direction upon pin 3!, which will effect alower- 7 ing of the cutting diamond 60 into cutting position. However,upon de-energization of the e1ectro-magnets, the spring 80 will functionto swing the bar 13 outwardly so as to rockthe lever 28 in a clockwisedirection and return the cutting diamond to a noncutting position. Thespring Tl serves to yieldably maintain the diamond in engagement withthe glass during the cutting 70 operation while, at the-same time,allowing a limited amount of rocking movement of the lever 28 to takecare of anypunevenness in the glass surface. In other words, the lever28 is permitted'a slight rocking movement even when 15 the bar 13 isheld inwardly by the electromagnets.

In order to facilitate the cutting operation and better the action ofthe cutting tools, it is desirable to oil the glass sheets or platesalong the path to be travelled by the cutting tools. To this end, thereis mounted upon the top of the table A between the cutting and receivingsections II and I2 respectively, an oiling device designated in itsentirety by the numeral 83 and comprising a reservoir 94 adapted tocontain a quantity of oil and being supported by studs 85. The oilingdevice also includes a substantially inverted U-shaped member 86 coveredwith a wick 8'! of suitable material such as felt or the like, thedown-turned edges of said wick, being immersed within the oil. With suchan arrangement, the oil will pass upwardly by capillary attraction intoand through the wick.

Also carried by the L-shaped lever 28 of each cutting unit M is an arm88 pivoted to said lever -as at 89 and carrying at one end a roller orWheel 90 of felt or some other suitable material. This roller is adaptedto rest upon the upper surface of the oiling wick 81 when the table isin its normal inoperative position and when the cutters are lowered intocutting position. One of these rollers is provided for and positioned inalignment with each cutting diamond so that as the table is movedrearwardly through its cutting stroke, the wheels 90 will run over theglass in advance of the cutters and oil the same whereby to facilitateand better the cutting action of the diamonds.

The downward movement of each oiling wheel 90 is limited by a stop pin9i carried by cross beam l3 and engaging a relatively small pin 92carried at the adjacent end of pivoted arm 88. The pivot point 39 is sopositioned with respect to roller 99 that when the cutters are loweredinto cutting position, the said rollers will rest upon wick 81, whereaswhen the cutters are raised into non-cutting position, the rollers willalso be raised upwardly out of contact with the oiling device as shownby the broken lines in Fig. l, the said arm 88 being swung about itspivot by engagement of the pin 92 with pin 91. The oiling device 83 ispreferably disposed slightly beneath the upper surface of the table sothat the sheet will not contact therewith during the transfer thereoffrom the cutting section to the receiving section.

When the machine is in its normal inoperative position with the cuttingtable A at the forward end of its movement, the said table will assumethe position relative to the cutters as disclosed in Fig, 1. After thetable has moved rearwardly and the cutting of the glass sheet has beencompleted, the cut glass is adapted to be shifted from the cuttingsection i l of the table onto the receiving section l2 thereof upon thereturn of the table to its starting position. This is automaticallyaccomplished in the following manner: Thus, there is secured to thecross beam 13 a plurality of spaced brackets 93 and carried by thesebrackets and extending transversely of the table is a rod 94. Mountedupon the rod at spaced points longitudinally thereof are a plurality ofhook members 95, each comprising a body portion 96 having a verticalslot- 9'5 therein for receiving the rod therethrough. Carried at therear end of the body portion is a roller 98 and extending forwardly fromthe body portion is a hook 99. The hook members are so constructed thatthe roller end 98 will overbalance the hook end 99 and will normallyhold the hook upwardly in engagement with a rod Hit as shown in Fig. 1.The vertical position of the hook members 95 may be controlled by setscrews lei, one being carried by each hook member and adapted to engagerod 94. The hook members are also maintained in properly spaced relationalong the rod 94 by means of spacing collars or the like 102 (Fig. 8).

As the glass sheet I9 is carried rearwardly upon the table beneath thehook members, the sheet engaging the rollers G9 will lift the same andthereby rock the said hook members upon rod 94 so as to lower the hooks$9. The hook members will ride over the glass in contact therewith untilthe cutting table reaches the end of its rearward movement, whereuponthe hook ends 99 on the said members will hook over the forward edge ofthe glass sheet and prevent the sheet from moving forwardly upon thereturn forward movement of the table. As a result, when the table isagain moved forwardly, the glass sheet will be slid from the cuttingsection H of the table onto the receiving section [2 thereof.

As pointed out above, the cutting units M are preferably spacedapproximately one inch apart throughout the width of the table and, asdisclosed in my copending application, are preferably actuated by anoperator through the medium of a keyboard positioned adjacent the frontof the machine. The keyboard comprises a plurality of keys, one beingprovided for and connected in circuit with the electro-magnets of therespective cutter so that the said cutters are independently movable atall times into and out of cutting position.

In practice, the operator places the glass sheet ID to be out upon thecutting section ll of the table when the table is in its forwardposition and, after inspecting the glass, operates the desired key orkeys, whereby to cause the energization of the desired magnet or magnetsto cause movement of the corresponding cutter or cutters into cuttingposition. The means for then moving the table is placed in operation andthe table moved rearwardly to carry the glass beneath thecuttingmechanism B, whereupon those cutters which have been previously movedinto cutting position will effect the scoring of the glass sheet alongthe desired lines. When the table reaches the end of its rearwardcutting stroke, the previously energized electro-magnets are adapted tobe de-energized so as to cause those cutters in cutting position to bemoved upwardly out of cutting position. The table is then movedforwardly to its original starting position to receive another sheet ofglass to be cut. Upon forward movement of the table, however, the glasswill be automatically transferred from the cutting section I I of thetable to the receiving section it thereof by the hook members 95 asexplained above.

It is to be understood that the form of the invention herewith shown anddescribed is to be taken as the preferred embodiment of the same, andthat Various changes in the shape, size and arrangement of parts may beresorted to without departing from the spirit of the invention or thescope of the subjoined claims.

I claim:

1. In glass cutting apparatus, cutting mechanism including asubstantially horizontal supporting arm, ashoe carried at the forwardend of said arm, means for adjusting the shoe transporting arm, a shoecarried at the forward end 10 of said arm, a member pivoted to saidshoe, a cutter holder carried by said member and having an openingtherethrough, a cutter removably secured Within said opening, and meanscarried by said holder and engaging said member for raising and loweringthe said holder and cutter carried thereby relative to said shoe.

3. In glass cutting apparatus, cutting mechanism including a pivotallymounted substantially horizontal supporting arm; a shoe carried at theforward endof said arm, means for adjusting the shoe transversely withrespect to said arm, a member pivoted to said shoe, a cutter holdercarried by said member and having an opening therethrough, a cutterremovably secured within said opening, and means carried by said holderfor raising and lowering the cutter with respect to the glass.

i. In glass cutting apparatus, cutting mechanism including asubstantially horizontal supporting arm, a shoe carried at the forwardend of said arm, means for adjusting the shoe transversely with respectto said arm, a member pivoted to said shoe and having openingtherethrough, a cutter holder removably received within the opening insaid member and in. turn having an opening therethrough, a cutterremovably received within the opening in said holder, means for securingthe holder within said member, and means for securing the cutter within,said holder.

5. In glass cutting apparatus, cutting mechanism including asuo"tantial1y horizontal supporting arm, a shoecarried at the forwardend of said arm, means for adjusting the shoe transversely with respectto said arm, a member pivoted to said shoe and having openingtherethrough, a cutter holder removably received within the opening insaid member and in turn having an opening therethrough, a cutterremovably received within the ope ing in said holder, means for securingthe holder v thin said member, means for securing the cutter within saidholder, and means carried by sa d hoider for raising and lowering thecutter witn respect to the glass.

6. In glass cutting apparatus, cutting mechanism including a horizontalsuppor ing arm, a shoe carried at the forward end of said arm, said shoeincluding an arcuately shaped bottom plate having an opening therein, amember pivoted to the shoe and adapted to rest upon the bottom platethereof, a cutter holder carried by said member, and a cutter carried.by said holder and projecting through the opening in the curved bottomplate of said shoe.

7. In glass cutting apparatus, cutting mechanism including asubstantially horizontal supa cutter holder carried by said member, anda cutter carried by said holder and projecting through the opening inthe curved bottom plate of said shoe.

8. ,In glass cutting apparatus, cutting mechanism including asubstantially horizontal supporting arm, a shoe carried at the forwardend of said arm, said shoe including an arcuately shaped bottom platehaving an opening therein, a member pivoted to the shoe and adapted torest upon the bottom plate thereof, a cutter holder removably carried bysaid member, a cutter removably carried by said holder and projectingthrough the opening in the curved bottom plate of said 1 shoe, and meanscarried by said holder and engaging said member for raising and loweringthe said holder and cutter carried thereby relative to 7 said shoe.

9. In glass cutting apparatus, cutting mechanism including asubstantially horizontal sup porting arm, a shoe carried at the forwardend of said arm, means for adjusting the shoe transversely with respectto said arm, said shoe including an arcuately shaped bottom plate havingan opening therein, a member pivoted to the shoe and adapted to restupon the bottom plate thereof, a cutter holder removably carried by saidmember, a cutter removably carried by said holder and projecting throughthe opening in the curved bottom 2 ber pivoted to the shoe and adaptedto rest upon the. bottom plate thereof, said member having avsubstantially vertical opening therethrough, a cutter holder removablyreceived within the opening in said member and also having an openingtherethrough, a cutter removably received within 4 theopening in saidholder and projecting through the opening in the curved bottom plate ofsaid shoe, means for securing the holder within said member, and meansfor securing the cutter within said holder.

11. In glass cutting apparatus, cutting mechanism including asubstantially horizontal supporting arm, a shoe carried at the forwardend of said arm, said shoe including an arcuately shaped bottom platehaving an opening therein, a mem- 5 ber pivoted to the shoe and adaptedto rest upon the bottom plate thereof, said member having asubstantially vertical opening therethrough, a cutter holder removablyreceived within the opening in said member and also havingan opening 5'said holder, and means carried by said holder and engaging said memberfor raising and lowering the said holder and cutter carried therebyrelativ to the shoe. 7

12. In glass cutting apparatus, cutting mechanism including asubstantially horizontal supporting arm, a shoe carried at the forwardend of said arm, said shoe including an arcuately shaped bottom platehaving an opening therein, a member pivoted to the shoe and adapted torest 7 upon'the bottom plate thereof, said member having a substantiallyvertical opening therethrough and a cut-out portion communicating withsaid opening, a cutter holder removably secured within the opening insaid member and being pro- 1 vided with a stem received within saidcut-out portion, a cutter carried by said holder and projecting throughthe opening in the curved bottom plate of said shoe, an adjusting screwpassing through said stem for securing the cutter in place, and meansfor adjusting the cutter holder and cutter vertically as a unit relativeto said member.

13. In glass cutting apparatus, cutting mechanism including a pivotallymounted substantially horizontal supporting arm, a shoe carried at theforward end of said arm, means for adjusting the shoe transversely withrespect to said arm, said shoe including an arcuately curved bottomplate having an opening therein, a member pivoted to the shoe andadapted to rest upon the bottom plate thereof, said member having asubstantially vertical opening therethrough and a cut-out portioncommunicating with said opening, a cutter holder removably securedwithin the opening in said member and being provided with a stemreceived within said cut-out portion, a cutter carried by said holderand projecting through the opening in the curved bottom plate of saidshoe, an adjusting screw passing through said stern for securing thecutter in place, and means for adjusting the cutter holder and cuttervertically as a unit relative to said member.

14. In glass cutting apparatus, cutting mechanism including asubstantially horizontal supporting arm, a shoe carried at the forwardend of said arm, means for adjusting the shoe tramversely with respectto said arm, a cutter holder pivotally carried by said shoe, and acutter carried by said holder.

15. In glass cutting apparatus, cutting mechanism including asubstantially horizontal supporting arm, a shoe carried at the forwardendofsaid arm, means for adjusting the shoe transversely with respect tosaid arm, acutter holder pivotally carried by said shoe, a cuttercarried by said holder, and means for raising and lowering the cutterrelative to said shoe.

16. In glass cutting apparatus, cutting mechanism including asubstantially horizontal sup porting arm, a shoe carried at the forwardend of said arm, said shoe including a bottom plate having an openingtherein, a cutter holder pivotally carried by said shoe, and a cuttercarried by said holder and projecting through the opening in the bottomplate of said shoe.

17. In glass cutting apparatus, cutting mechanism including asubstantially horizontal supporting arm, a shoe carried at the forwardend of said arm, said shoe including a bottom plate having an openingtherein, means for adjusting the shoe transversely with respect to thesaid arm, a cutter holder pivotally carried by said shoe, and a cuttercarried by said holder and projecting through the opening in the bottomplate of said shoe.

18. In glass cutting apparatus, cutting mechanism including asubstantially horizontal supporting arm, a shoe carried at the forwardend of said arm, said shoe including a bottom plate having an openingtherein, a member pivoted to the shoe and adapted to rest upon thebottom plate thereof, a cutter holder carried by said member, and acutter carried by said holder and projecting through the opening in thebottom plate of said shoe.

19. In glass cutting apparatus, cutting mechanism including asubstantially horizontal supporting arm, a shoe carried at the forwardend of said arm, said shoe including a bottom plate having an openingtherein, means for adjusting the shoe transversely with respect to thesaid arm, a member pivoted to the shoe and adapted to rest upon thebottom plate thereof, a cutter holder carried by said member, a cuttercarried by said holder and projecting through the opening in the bottomplate of said shoe, and means for raising and lowering the cutterrelative to said shoe.

EDWIN A. ROSIN.

